DACHIARDITE


Meaning of DACHIARDITE in English

General Information:

Chemical Formula:

(Ca,Na2,K2)5Al10Si38O96·25(H2O)

Environment:

Hydrothermal zeolite that generally occures in silica-rich environments in late states of granitic pegmatites and Si-rich basalts.

Locality:

Filne della Speranza, Mte. Capanne, San Piero de Campo, Elba, Italy.

Name Origin:

Named after Antonio D'Achiardi (1839-1902), Professor of Mineralogy, Universit di Pisa, Italy, who first described the mineral discovered by his son in a granitic pegmatite.

Physical Properties:

Cleavage:

[100] Perfect, [001] Perfect

Color:

white, pink, or orange red.

Density:

2.14 - 2.21, Average = 2.17

Diaphaniety:

Transparent to translucent

Habits:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Twinning Common - Crystals are usually twinned., Pseudo Octohedral - Crystals show an octohedral outline.

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous - Silky

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .